wip: docs

[mauroerta]

Proposed changes

Initial update of the docs

Types of changes

• [x] 📚 Documentation Update (if none of the other choices apply)

Checklist

• [x] 👀 I have read the CONTRIBUTING doc
• [x] ✅ Lint and unit tests pass locally with my changes
• [x] 🧪 I have added tests that prove my fix is effective or that my feature works
• [x] 📚 I have added the necessary documentation (if appropriate)
• [x] 🔀 Any dependent changes have been merged and published in downstream modules

[changeset-bot[bot]]

⚠️ No Changeset found

Latest commit: 8360c2852b275c21becd974461e27f2abd5dd800

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

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[codecov-commenter]

Codecov Report

All modified lines are covered by tests :white_check_mark:

Comparison is base (b094895) 100.00% compared to head (8360c28) 96.79%. Report is 155 commits behind head on main.

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #891 +/- ## =========================================== - Coverage 100.00% 96.79% -3.21% =========================================== Files 103 67 -36 Lines 914 812 -102 Branches 160 146 -14 =========================================== - Hits 914 786 -128 - Misses 0 16 +16 - Partials 0 10 +10 ``` [see 135 files with indirect coverage changes](https://app.codecov.io/gh/morfeojs/morfeo/pull/891/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=morfeojs)

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